Leather-drier.



E. B. .AYRES.

LEATHER DRIER.

APPLICA'l'lON 111 131) 0130. 1013.

Patented Au. 4, 191% mwwm L z r z 5m 1111 I1 S lllll lllllllll l l l nvl I l I l I I I l I l I I I E. B. AYRBS.

LEATHER DRIER.

APPLICATION FILED DEC. 27, 1913.

3 SHEETS SHBET 2.

Patented Aug. 4;, 1914,

772L172 ass as 7kmfimu E. B. AYRES. LEATHER DRIER. APPLIOATION FILED mo,27, .1913.

Patented Aug. 4, 1914.

3 BHEETS BHBET 3.

OQKOOO 000000 UOOOOO 000000 000000 OOOOOO 000000 000000 000000 000000000000 ooo uoo ELWOOD AYRES, F PHILADELPHIA,

PENNSYLVANIA, ASSIGNOR TO THE PHILA- DELIPHIA TEXTILE MACHINERY COMPANY,OF PHILADELPHIA, PENNSYLVANIA,

A GOBPOBATION or PENNSYLVANIA.

LEATHER-DRIER.

Specification of Letters Patent. Application filed December 27, 1913.

Patented Aug. 4, 1914.

Serial No. 808,981.

The object of my invention is to construct a drying machine in whichdifi'erent grades or thickness-es of leather can be dried at the Fig. 5;v

"view illustrating the circulating chamber cal and one is horizontadirection of the arrow a,

transverse sectional sometime. This 0b ect I accomplish by arranging twoor more conveyors in a casing and driving. them at different speeds sothat the lighter skins are traversed through the casingat a greaterspeed than the heavier skins. "This object I attain in the followingmanner reference being'had to the accompanying drawings, in which:Figure 1 is aside view of my improved leather drying machine; Fig. 2 isa plan view; Fig. 3 is an end view looking in the Fig. 1; Fig. 4 is aview on the line aw-a, Fig. 5 is'a side viewof a modification'of theinvention; Fi 6 is a transverse sectional view-of the mo ification shownin andFig 7 i is a transverse sectional placed between two dryingchambers.

Referring to the drawings, 1 is the casing pf th'e drier, in the presentinstance, divided intofour longitudinal chambers by partitions 2. Two ofthese v The upper chamber' 3 c'ommnnicates at-each side with sidechambers-7* and and under the hari'zontal partitionQ is the dryingchamber 4 in which are mounted two lon tudinal'conveyers 5 and'ti, whichtravel ongitudinally in the casing The heating pipes .9 are arranged inan suitable manner in the side chambers 7 an 8 so as to providesufficient heat to the air in circulation to the proper bringtemperature. There. are three fans 11, 1D the present instance, whicharehorlzontally arranged and mounted on vertical shafts 10. These" fansare located-in openings in the horizontal partition 2 and they circulatethe air in the casin so that there is a constant circulation of airbetween the skins carried by the conveyers and through the sidecompartments 7 and 8. The moist air is removed from the center of themachine by means of an exhaust fan 28 connected to a flue 29 and freshair is admitted at any desirable partitions are verhcharacter andthickness )oiut through openings 30. The fan shafts, 1n the presentinstance, are geared to horizontal shafts 12 arranged transversely ofthe machine, but the fan shafts may be driven in any suitable mannerwithout departing from the essential features of the invention. Each ofthe endless conveyors consists of two chains 13 arranged to travel oversprocket wheels 11 and on these conveyers are placed the sticks 15 fromwhich are hung the skins to. The two conveyors are identi cal in form,but one is driven at a greater speed than the other.

16, 17 are two driving shafts which are located at one end of themachine and on the shaft 16 are two sprocket wheels 18. Drive chainspass around these sprocket wheels and around sprocket wheels 20 on theshaft 19 so as to drive the conveyers and on the shafts 19 are thesprocket wheels 1410f the conveyers 5. On the outerend of the shaft 16is a worm wheel23 whichmeshes witha worm on the shaft 24 on whichis 'astepped pulley 25 andon the shaft 26 is a stepped pulley 27 so that theshaft 16 can be driven at an speed desired by changing the belt. Hhe'saft 26 can be driven from any source of power and, in the presentinstance, it is driven from the shaft 12 geared to the fan shaft, asshown by dashand dot lines, Fig. 3, illustrating the belt.

The conveyor 6 is driven from the shaft 17 on which are two sprocketwheels 18 and belts pass from these sprocket wheels around sprocketwheels 22 on the shafts; 21 on which the sprocket wheels 14 of theconveyer 6 are mounted. On the outer end of the shaft'17 is a worm wheel23 with which meshes a shaft 24 and on this shaft is a stepped pulley 2.and on the shaft 26 is a stepped pulley 27, driven from a fan shaft 12.By arrangin the belts on the belt pulleys 25 and 27, an 25? and 27 theconveyors 5 and 6 can be driven at different speeds, according to the ofthe skins being dried.

I have shown in Figs. 1, 2, and 3, an endless conveyer in which thereturn run of the conveyer travels under the carrying run, and; in fact,travels over the floor of the drier.- The conveyers may be arranged inan manner desired.

n Figs. 1 and 3, the sticks 15 are carried by chains and may either beattached to the chains or, preferably, loosely mounted thereon. Theskins can either be attached to the bars by clips or other fastenings orcan be placed over the bars which are traversed "from one end ofthe-drying chamber to the other. An operator attl feed end of themachine places onebar arcroanother, with the skinsthereon, onftheconveyor chains,

then another operator a't the discharge end of the machine removesthe-bars from the conveyor.

y in lgs. 5 and'd, ll have.' illnstrated an other form of conveyor inWhich-"the return run travels over the. top of the casin The" conveyorsillustrated atfi and (i each conJ' can be drivenat different speeds andin this instance there are two conveyors in each chamber.

By the above apparatus ll am'enabled to dry skins of diiierentthicknesses. The" skins to be dried are of var ing size and tniclrnessand heretofore it as been the common ctice 'to dry all of these skins inone driera {lonse neatly, the travel of the machine had to e regulatedto dry the thickest and largest skins and in many instances the thin andsmall skins were over dried.

,,n1y improved drier an operator can; place the thin and small slnns inone chamher and the thick and large skins in the other chamber. Itnaturally takes a greater length or time to drythe thicker and largerskins and the conveyor carrying thcm is driven at a slowerv speed thanthe conveyor carrying the small and thin skins. When these differentskins are removed from the opposite end or the apparatus, they are allproperty dried. I

Eihe combination in a drier for shins, or

The fans nrc e evi a casing having a drying chamber and a heatingchamber-therein; a circulating fan for circulating heated air throlighthe chamhers; two conveyers inthedrying chamber; means located on theconveyersv from which the skins to be dried are hung transverselyagreater speed than the other.

2. Thocombination of acasing; twoloners; and means for drivingone'conveyenai;

. to the direction of movement of the convey gitndinal' conveyorslocated therein; means-- forheating the air in the'casing; means forcirculating the air; two driving shafts located at one end of themachine,v one shaft being arranged to ClIlVE one conveyer and "the othershaft being arranged to drive the other conveyor; and change speedmechanlsin for driving each shaft so that the speed of the two shaftscan be varied at will in order tochange. the speed of travel of eachconveyor. f

3. The combination of a casing having a longitudinal drying chamber andheating chambers ateach side oi the drying chamher; a circulating fanfor causing the air to circulate through the chambers; twononveyers inthe drying chamber; means for suspending skins from the conveyers;independent means for driving each conveyor; and change speed mechanismfor each driving means so that the speed of travel of the conveyors canbe independently regulated.-

t. The combination in apparatus for drying skins, of a casing havingalongitudinally arranged drying chamber; heating; chambers at each sideof the drying chamber; a series of circulating fans arran above'thedrying chamberfor circulating the air through the drying chamber and theheating chambers; means, located near the center of the casing, foradmitting fresh air; an exhaust fan communicating wlth the center ofthe-casing for withdrawing" the moist .air; two conveyors located in thedrying chamber; means for independently traversing; the conveyorsthrone-h the casing; and means from which the s ins are suspended fromthe conveyers.

In testimony whereof, I have signed my name to this specification, inthepresence of two subscribing witnesses. 4

. ELWUUD B. AYRES.

Witnesses: v 7 Quinn 1. Moran, WM. A. Benn.

